Product Description

digital qam modulator, modulator viedo, clear qam, demodulator,*6 qam

Features 

i  Complying DVB standard signal channel coding.

l  Support full range variable data rate, bandwidth and QAM mode Data stuffing

l  super buffer (optional),anti-burst code stream

l  PID filter, re-reflection, PSI,SI information synchronal updating possible.

l  Automatically code stream stuffing and empty pocket deleting.

l  Code stream real-time monitoring, empty pocket filtering

l  Support NIT table modifying

l  real-time code stream monitoring

l  PCR adjusting, output symbol rate variable:**7Ms/s

l  Fixed or agile channel output;

l  Providing ASI and Ds3 port and output port (optional)

l  Providing RF output monitoring port(**0dB)

l  Local or Remote administration possible.

l  LCD display, flexible in operating

l  High reliability design, stable in running

Specifications 

1. Data interface

ASI interface (Asynchronous Serial interface)

A:Input:

Connector: BNC

Impedance: *5Ω

Packet format: **8/**4 bits

Access data rate: **0Mbps 

Max valid bit rate: *1.6Mbps

DVB standard

B: Loop output:

 Connector: BNC

 Impedance: *5Ω

SPI interface (Synchronous Parallel interface)

Connector: DB**5 female  

Packet format: **8 or **4 bits

DVB Standard: LVDS

2.IF interface

A: IF

Connector: BNC

Impedance: *0Ω

IF frequency: *5.*5/*6/*6.*5/*4 MHz (optional)

IF Bandwidth≤8MHz

Reflect loss ≥*8dB

Input level: **0dBuV (rms)

B:IF loop output:

Connector: BNC

Impedance: *0Ω

IF frequency: *5.*5/*6/*6.*5/*4 MHz (optional)

IF Bandwidth≤8MHz

Reflect loss ≥*8dB

Output level: **0±2dBuV(rms)

3.  RF interface

A. RF output:

Connector: BNC

Impedance: *5Ω

Output Frequency: *8~**0MHz

Reflect loss ≥*5dB

Output level:

**5~**5dBuV (adjustable)

Carrier rejection: > *5dB

SNR(out of band):≥*0dB

B: RF output for test

Connector: BNC

Impedance: *5Ω

Output level: *5dBuV~**5dBuV (adjustable)

4. Channel signal encoding

Constellation: *6QAM, *2QAM, *4QAM, **8QAM, **6QAM.

Channel encoding: RS encode, DVB standard

MER:≥*2dB

SNR(out of band):≥*0dB

5. Network management interface

IEEE**2.3 ETHERNET, RJ*5 interface

Software protocol: SNMP protocol

6. Power supply

Voltage:      **5V~**5VAC or *5V~**5VAC

Frequency: *0Hz±2%

Power consumption: *0W 

7. Operation environment

Operation temperature: *5~*5°C

Storage temperature: **5~**5°C.

Relative humidity: *0~*5%

8. Radiation and safety

Up to GB*******2 and GB******8

9. E3 /DS3 Interface (optional)

A: Input (G.**3 standard)

Connector: BNC

Impedance: *5Ω 

Packet format **8/**4 bits

Bit rate: E3/DS3 No-frame format (*4.**8Mbps/*4.**6Mbps)

B. Output (loop)

Connector: BNC 

Impedance:  *5